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Sql 此错误的解决方案_Sql - Fatal编程技术网
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Sql 此错误的解决方案

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Sql 此错误的解决方案,sql,Sql,我写了这个查询： String sql = "Update db " + "SET LName = '"+txtLName.getText()+"'," + "ATC_Code = '"+txtATCcode.getText()+"'," + "ATC_Name= '"+txtATCname.getText()+"'," +

我写了这个查询：

String sql = "Update db " +                         
"SET LName = '"+txtLName.getText()+"'," +                               
"ATC_Code = '"+txtATCcode.getText()+"'," +                              
"ATC_Name= '"+txtATCname.getText()+"'," +                               
"Course_Name =  '"+txtCourseName.getText()+"'," +
"Course_Fee = '"+txtCourseFee.getText()+"'," +
"Where FName = '"+txtFName.getText()+"' ";
我得到了一个错误，比如：

Malformed SQL Statement: Expected ',', found 'Anuja'`.
Statement:Update db SET LName = 'df',ATC_Code = '323',ATC_Name= 'sd',Course_Name =  'd',Course_Fee = '534',Where FName = 'Anuja'
删除
集合
语句的最后一个
，
：


String sql = "Update db " +
   "SET LName = '"+txtLName.getText()+"'," +
   "ATC_Code = '"+txtATCcode.getText()+"'," +
   "ATC_Name= '"+txtATCname.getText()+"'," +
   "Course_Name =  '"+txtCourseName.getText()+"'," +
   "Course_Fee = '"+txtCourseFee.getText() + //here does not need '
   "Where FName = '"+txtFName.getText()+"' ";


另一方面，这种sql命令生成（连接包含某些值的字符串）可能会受到sql注入攻击的怀疑，为了防止这种类型的攻击，请使用参数并设置参数值。有关更多信息，请参阅


Update db 
SET LName = 'df',
    ATC_Code = '323',
    ATC_Name= 'sd',
    Course_Name =  'd',
    Course_Fee = '534',
Where FName = 'Anuja'


仅将更改删除最后一个逗号“，”


Update db 
SET LName = 'df',
    ATC_Code = '323',
    ATC_Name= 'sd',
    Course_Name =  'd',
    Course_Fee = '534'
Where FName = 'Anuja'



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